Turnover door.



A. T. PRESCOTT- TURNOVER DOOR.

APFLICATION FILED NHL 29 1915- 1 %1L$ @%@m I Patented Jan. 30,1917.

I SHEET]- I i m/mwon A. T. PRESCOTT. TURNOVER DOOR.

APPLICATION FILED 1AM.29. 191s 1 15M v I Patented J30, 1917.

3 SHEETS-SHEET 2.

A. T. PRESCOTT.

TUBNOVER DOOR.

APPLICATION FILED JAN. 29, 191 6.

mm Jan. 30,1917.

3 SHEETS-SHEET 3- I'll I E/JTOB M a A Torr/ 5 FROTHINGH COMPANY, 015 NEW YORK,'N. Y., A CORPORATION 015 NEW YORK.

intents.

Specificationof Letters Patent.

TURNOVER DOOR.

Patented Jan. 3U, di it.

Application filed January 29, 1916. Serial No. 74 968.

To all whom it may concern:

. Be it known that I, ARTHUR T. PRESCOTT, a citizen of the United States, and a resident of East Orange, Essex county, and State of New Jersey, have invented certain new and useful Improvements in Turnover Doors, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to doors and has special reference to suspension and guiding mechanisms for relatively large heavy doors.

One object of my invention is to provide a comparatively simple and durable door equipment that shall be applicable to doors having one or more sections, and shall comprise a small number of simple part-s.

Another object is to provide a door which shall be particularly adapted by reason of the structure and operation of the suspension mechanism, for use in a garage for example, where the space is restricted and where ease of operation is a primary consideration.

Other objects and advantages of my inition will be setiorth hereinafter, and. order that my invention may be thoroughly understood, I will now proceed. to describe the same in the following specification and then point out the novel features thereof in appended claims.

Referring to the drawings: Figure l is a front view of a door comprising a single section arranged and equipped in accordance with my invention. A. sectional eleva rlon atri 'ht armies to Fi 1 is shown in h to '3 12'. 3. the open position of the door being idicated by broken lines. Fig.3 IS a secional plan view showinga portion of the guide mechanism of the same door in de tail. Figs. l, 5 and 6 are partially diatially midway of its length. Each l)1'i:.'l.t

are connected to the brackets 17 at their lower ends. The hangers 19 are attached to the ceiling or ceiling structure above the door opening. Thelinks 18 are always under: tension so that chains or other flexible members may be substituted as a means for suspending the door from the hangers. The hoisting and counterweight mechanism is designated 20 and may be of any suitable construction. The hoisting chains 21 in the arrangement shown are attached to the projections 15 on which the rollers 14 are mounted. of them passes over an idler sheave 22 and both of them pass over an actuating sheave 23 from whence they extend to a counterweight.

designates the counterweight and 25 the hand chain for raising and loweringthe door.

Having special reference to Fig. 4:, the door here shown diagrammatically, comprises an upper section 30 to which brackets 31 are attached, a lower section 32 which is adapted to slide in guide-ways 33 on the upper section. The upper section has rollers 34: which cooperate with guideways on the door posts 35.

The brackets are connected to suspender links 36 corresponding to the links 18 of Fig. 2. tion operates like the single section of the previous figures and the lower section slides upon the upper.

The hoisting chain 37 may be attached to the lower door section 32 near its lower corners, projections 38 constitutin a ready means of attachment. l i hen the door is to be opened an upward pull is exerted on the hoisting chains in. a well known manner and the lower section first slides upwardly in the glililQWfij A projection or ledge of the lower section engages the lower of the upper section when the door tions are overlapped and further hoisting swings the upper section. together with the lower, to its open position shown in broken lines in Fig.

The rollers 14: instead of being located.

In this arrangement the upper sec-- near the lower corners of the door as in Figs. 1 and 2, may be located intermediate the length of the single door section so that a portion of the door will extend through the doorway to constitute a canopy when the door opens inwardly. This arrangement is diagrammatically illustrated in Fig. 5.

While I have shown each of the hangers 19 almost directly above the point of connection between the link and the bracket,

- this arrangement is not essential to my invention and it may be desirable in some cases to locate the hanger relatively close to the plane of the door. For example, the

door may be arranged to swing outwardly instead of inwardly, the door constituting a canopy in its open position. In this case it may be more convenient and suitable to support the hanger closer to the plane of the door as shown in the diagram of Fig. 6.

The structuresillustrated may be modified in Various ways within the spirit and scope of my invention, and I intend that otally with the suspended links whereby a force exerted upon theldoo r in the plane thereof and near the guide means-causes it to move rotatively from a vertical to a substantially horizontal plane.

2. In combination with a door opening .having vertical guideways, a door having guide means near its lower end cooperating with the guideways, suspended links spaced materially from the plane of the door opening and spaced apart to permit the door to swing between them, a pair of brackets affixed to the door near its edges at an intermediate point in its length and extending laterally a substantial distance from the inner surface of the door to connect pivotally with the suspended links, and a hoisting mechanism acting upon the door near the guide means whereby a force exerted upon the door in the plane thereof and near the guide means causes it to move rotatively from a vertical to a substantially horizontal plane.

3. In combination with a door opening having vertical guideways, a door having guide means near its lower end cooperating with the guideways, suspended links spaced materially from the plane of the door opening and spaced apart to permit the door to swing between them, a pair of brackets affixed to the door nearits edges at an intermediate point in its length and extending laterally to connect pivotally with the suspended links, said brackets being spaced from the top of the door a distance substantially equal to their length whereby a force exerted upon the door in the plane thereof and near the guide means causes it to move rotatively from a vertical to a substantially horizontal plane.

4. In combination with a door opening, a door adapted to occupy a substantially vertical position when closed, guideways for the door opening adapted to hold the lower end of the door to a vertical movement, brackets extending laterally a substantial distance from the inner surface of the door from intermediate points in the length of the door, and links spaced materially from the inner surface of the door, suspended from above and pivotally connected to the brackets, the points of connection between the links and the brackets constituting a comparatively fixed axis about which the door moves rotatively from the vertical to a substantially horizontal plane.

In witness whereof, I have hereunto set my hand this 26 day of January, 1916.

ARTHUR T. PRESCQTT. 

